Grain-tube connection.



No. 680,748. Patenied Aug. 2U, IQDI. J. E. WELLING.

GRAIN TUBE CUNNECTIN.

(Application bed Apr, 9, 1901.)

(No Model.)

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lhnrrnp @rares arnnrr introno JOHN E. VELLING, OF CYNTI-IIANA, KENTUCKY,ASSIGNOR TO VALTER C. RENAKER, OF SAME PLACE.

GRAIN-TUBE CONNECTION.

SPECIFICATION forming part of Letters Patent No. 680,748, dated August20, 1901. Application filed April 9, 1901 Serial No. 55,091. (No model.)

To all whom, t may concern:

Be it known that I, JOHN E. WELLING, a citizen of the United States,residing at Cynthiana, in the county of Harrison and State of Kentucky,have invented certain new and useful Improvements in Grain-TubeConnections; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled 1o in the art to which it appertains to make and use the same.

This invention has for its object to provide a firm, positive, andsecure connection betweena grain-tube and the cup and which will I5admit of the tube being readily removed from and attached to the cupwithout the use of tools.

For a full description of the invention and the merits thereof and alsoto acquire a 2o knowledge of the details of construction of the meansfor eecting the result reference is to be had to the followingdescription and the drawings hereto attached.

Vhile the essential and characteristic fea- 2 5 tures of the inventionare necessarily susceptible of modification, still the preferredembodiment of the invention is illustrated in the accompanying drawings,in which- Figure l is a side elevation of the upper 3o portion of agrain-tube and cup connected in accordance with this invention. Fig. 2is a vertical section thereof. Fig. 3 is a View similar to Fig. 2 of amodification, the coupling being integral with the cup. Fig. 4 is aperspective view of the coupling.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The cup l and tube 2 are of ordinary con struction, such as usuallyprovided for graindrills, the tube being tlexible and composed ofspring-wire formed into a coil the elements of which lie close together,so as to form a continuous tube Without any break or interruption. Asheretofore noted, the invention deals more particularly with the meansof connection between the tube and cup,-and advantage is taken of thespiral formation of the 5o grain-tube to join the parts by ascrew-thread The coupling 3 may be integral connection.

with the cup l or separate therefrom, the latter construction beingpreferred, as it enables the application of the invention to cups andgrain-tubes already in use and upon the market.

The coupling 3 in either form, whether integral with the cup or separatetherefrom, consists of a bushing, cuff, sleeve, or short tube and isformed with offstanding lugs Je at 6o diiferent points in the length ofthe coupling corresponding to the relative location of the coil or coilsof the tube 2, with which said lugs engage when the parts l and 2 areconnected. As shown in ,Figa 3, the coupling 3 65 is integral with thecup and the lugs l project laterally therefrom, and the tube 2 fits overthe said coupling, the lugs 4 passing` between the coils or turns of thetube near its upper end as the said tube 2 is screwed 7o thereon.

The coupling (shown most clearly in Figs.

2 and 4) fits within the lower portion ot' the cup l and has an outerflange 5 at its upper end to overlap the inner shoulder 6 at the 75lower end of the cup l, so as to prevent disengagement of the parts land 3 when properly positioned and the tube 2 is in place. Correspondingslits are formed in the sides of the coupling 3 and extend from thelower end up- 8o ward for a short distance, and the portions of thecoupling between said slits are bent to form the lugs 4, said lugs beingpreferably of hook form to make a firm and secure connection. This formof coupling enters the upper end of the tube 2 and is held in the cup lby the upper end of the tube2 engaging with the lower end of the cup, asindicated most clearly in Fig. 2. When the tube 2 is disconnected fromthe coupling, the latter can 9o be readily removed from the cup; butwhen the parts are assembled, as indicated. in Fig.

2, they are firmly and securely connected and are not liable to casualdetachment because of the upward pressure exerted upon the lower end ofthe cup l by the tube The coupling may be formed in any way found mostadvantageous and may be applied to the cup l in any practical way, so asto admit of attaining the objects of this invention.

Having thus described the invention, what is claimed as new is- IDO l.In combination with a grain-tube con? sisting of a wire coil, and a cup,a coupling applied to said cup and formed with ostanding lugs to makescrew-thread connection with the grain-tube by passing between adjacentturns or coils thereof, substantially as set forth.

2. In combination with a grain-tube consisting of a wire coil, and acup, a coupling applied to the cup and having ostanding lugs of hookform to engage with the graintube by a screw-thread connection,substantially as set forth.

3. In combination with a grain-tube consisting of a wire coil, and acup, a coupling separate from the cup and adapted to be f1tied theretoand formed with offstanding lugs To make screw-thread connection withelements of the grain-tube, the latter serving in conjunction with thecup and coupling to hold the latter inplace, substantially as set forth.

ner shoulder, and a grain-tube consisting of 3o a wire coil, a couplinghaving an outer ange at its upper end to engage with the inner shoulderof the cup and having offstanding lugs to make screw-thread connectionwith the grain-tube, which latter normally exerts an upward pressureagainst the lower end of the cup to hold the parts in engagement,

substantially as set forth.

In testimony whereof I afiix my signature in presence of two witnessesJOHN E. WELLING. Witnesses:

J. W. BOYD, JNO. M. CRoMwELL.

